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FindFluentBaseTDocument, TProjectionCountDocumentsAsync Method

Counts the number of documents.

Namespace:  MongoDB.Driver
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.12.2+a4a3888f4fb51bb518b1eb5002effc2d47f2ea6a
Syntax
public virtual Task<long> CountDocumentsAsync(
	CancellationToken cancellationToken = null
)

Parameters

cancellationToken (Optional)
Type: System.ThreadingCancellationToken
The cancellation token.

Return Value

Type: TaskInt64
A Task whose result is the count.

Implements

IFindFluentTDocument, TProjectionCountDocumentsAsync(CancellationToken)
Remarks
Note: when migrating from CountAsync to CountDocumentsAsync the following query operations must be replaced:
+-------------+--------------------------------+
| Operator    | Replacement                    |
+=============+================================+
| $where      |  $expr                         |
+-------------+--------------------------------+
| $near       |  $geoWithin with $center       |
+-------------+--------------------------------+
| $nearSphere |  $geoWithin with $centerSphere |
+-------------+--------------------------------+
See Also